The Quartermaster Corps (QM) was responsible for the operation of the trolley system. Motormen, conductors and dispatchers were all soldiers. Whenever they encountered problems and needed technical assistance, the Manila Street Railroad Company (American owned) came in to help out.  The line was run without incident until 1925 when a trolley car ran away down a hill killing eight people. Other than that, the trolley lines served the island well.  Roads for motor vehicles were still being improved and throughout the 1930s the trolley system remained the primary transport system of Fort Mills .  Passenger service was free and there were also daily freight movements to and fro monitored closely by a dispatcher.